Question

How the level of sea water is known?​

Answer 1

Explanation:

NASA measures sea level around the globe using satellites. The Jason-3 satellite uses radio waves and other instruments to measure the height of the ocean's surface – also known as sea level. It does this for the entire Earth every 10 days, studying how global sea level is changing over time.

Answer 2

Answer:

The height of the depth of any point on the lithosphere is measured from the level of the sea which is taken as zero, because the level of sea water remains the same everywhere.

Explanation:

Please tell me is it correct or not.